Effects of alcohol on person perception: A social cognitive neuroscience approach.

The acute effects of alcohol on cognitive processing of expectancy violations were investigated using event-related brain potentials and a cued recall task to index attentional and working memory processes associated with inconsistency resolution. As predicted, expectancy-violating behaviors elicited larger late positive potentials (LPP) and were recalled better than expectancy-consistent behaviors. These effects were moderated by alcohol and the valence of initial expectancies. For placebo group participants, positive targets performing negative behaviors elicited the largest LPP responses and were recalled best. For those in the alcohol groups, negative targets behaving positively elicited the largest LPP and recall responses. These findings suggest that alcohol does not globally impair working memory processes in person perception but instead changes the nature of valenced information processing. Findings are discussed in the context of alcohol's effects on working memory processes, reward sensitivity, and the prefrontal cortical structures thought to mediate them. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Explaining social phenomena.

Philosophers of science have devoted volumes to the question of explanation; I've devoted some pages to it myself. In this highly contracted essay I shall offer no more than a comment on the problem of explanation, some vagrant but critical assessments of the dominant approaches to it, and a caution lest we take comfort in some of the recent "success"—or alleged success—in Psychology. I begin with this question: What does it mean to explain an occurrence? And then: What is it about any explanation that makes it good or bad? (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Mapping functional brain development: Building a social brain through interactive specialization.

The authors review a viewpoint on human functional brain development, interactive specialization (IS), and its application to the emerging network of cortical regions referred to as the social brain. They advance the IS view in 2 new ways. First, they extend IS into a domain to which it has not previously been applied--the emergence of social cognition and mentalizing computations in the brain. Second, they extend the implications of the IS view from the emergence of specialized functions within a cortical region to a focus on how different cortical regions with complementary functions become orchestrated into networks during human postnatal development. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Neural Basis for Verb Processing in Alzheimer's Disease: An fMRI Study.

Patients with probable Alzheimer's disease (AD) have difficulty understanding verbs. To investigate the neural basis for this deficit, the authors used functional magnetic resonance imaging to examine patterns of neural activation during verb processing in 11 AD patients compared with 16 healthy seniors. Subjects judged the pleasantness of verbs, including MOTION verbs and COGNITION verbs. Healthy seniors and AD patients both activated posterolateral temporal and inferior frontal regions during judgments of verbs. These activations were relatively reduced and somewhat changed in their anatomic distribution in AD patients compared with healthy seniors, particularly for the subcategory of MOTION verbs, but AD patients showed minimal activation in association with COGNITION verbs. These findings imply that poor performance with verbs in AD is due in part to altered activation of the large-scale neural network that supports verb processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Personality correlates of social conformity.

A group of 89 female social welfare case workers were administered the Guilford-Zimmerman Temperament Survey and a social conformity scale developed by the author. The latter comprised 37 items utilizing the direction of perception technique of attitude measurement. For the selected sample, the relationship between the two scales appeared to be limited to a correlation of -.47 between the social conformity scale and the Objectivity scale of the GZ. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Event-Related fMRI Study of Context Processing in Dorsolateral Prefrontal Cortex of Patients With Schizophrenia.

Context processing is conceptualized as an executive function involved in voluntary, complex actions such as overcoming automatic responses. The present study tested the hypothesis that context-processing deficits in patients with schizophrenia are associated with a dysfunction of left dorsolateral prefrontal cortex (DLPFC). Using event-related functional magnetic resonance imaging (fMRI), 17 controls and 17 medicated patients performed a version of the AX task in which a learned, automatic response had to be inhibited. In controls, left DLPFC activity increased when preparing to overcome an automatic response, whereas patients with schizophrenia showed no differential activation. In controls, context processing appeared to be associated with the differential representation of cues associated with the need to provide top-down support for overcoming automatic responses. This mechanism appeared to be impaired in patients with schizophrenia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Neural and cognitive plasticity: From maps to minds.

Some species and individuals are able to learn cognitive skills more flexibly than others. Learning experiences and cortical function are known to contribute to such differences, but the specific factors that determine an organism's intellectual capacities remain unclear. Here, an integrative framework is presented suggesting that variability in cognitive plasticity reflects neural constraints on the precision and extent of an organism's stimulus representations. Specifically, it is hypothesized that cognitive plasticity depends on the number and diversity of cortical modules that an organism has available as well as the brain's capacity to flexibly reconfigure and customize networks of these modules. The author relates this framework to past proposals on the neural mechanisms of intelligence, including (a) the relationship between brain size and intellectual capacity; (b) the role of prefrontal cortex in cognitive control and the maintenance of stimulus representations; and (c) the impact of neural plasticity and efficiency on the acquisition and performance of cognitive skills. The proposed framework provides a unified account of variability in cognitive plasticity as a function of species, age, and individual, and it makes specific predictions about how manipulations of cortical structure and function will impact intellectual capacity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Just because you're imaging the brain doesn't mean you can stop using your head: A primer and set of first principles.

Developments within the neurosciences, cognitive sciences, and social sciences have contributed to the emergence of social neuroscience. Among the most obvious contemporary developments are brain-imaging procedures such as functional magnetic resonance imaging. The authors outline a set of first principles designed to help make sense of brain-imaging research within the fields of cognitive and social neuroscience. They begin with a principle few would debate--that social cognition, emotion, and behavior involve the brain--but whose implications might not be entirely obvious to those new to the field. The authors conclude that (a) complex aspects of the mind and behavior will benefit from yet a broader collaboration of neuroscientists, cognitive scientists, and social scientists, and (b) social psychologists bring important theoretical, methodological, and statistical expertise to this interdisciplinary enterprise. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development and evaluation of a scale for measuring social acquiescence.

"A 56-item scale of social acquiescence has been developed by internal consistency item analysis. It has a reliability above .90 and correlates .95 with the tendency to accept or reject 300 proverbs, aphorisms, and similar statements. According to population differences and correlations between scales and various personality and intelligence measures, one who earns a high Social Acquiescence score resembles Sinclair Lewis' 'Babbitt'—an unquestioning conformer to social demands." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Race and gender on the brain: Electrocortical measures of attention to the race and gender of multiply categorizable individuals.

The degree to which perceivers automatically attend to and encode social category information was investigated. Event-related brain potentials were used to assess attentional and working-memory processes on-line as participants were presented with pictures of Black and White males and females. The authors found that attention was preferentially directed to Black targets very early in processing (by about 100 ms after stimulus onset) in both experiments. Attention to gender also emerged early but occurred about 50 ms later than attention to race. Later working-memory processes were sensitive to more complex relations between the group memberships of a target individual and the surrounding social context. These working-memory processes were sensitive to both the explicit categorization task participants were performing as well as more implicit, task-irrelevant categorization dimensions. Results are consistent with models suggesting that information about certain category dimensions is encoded relatively automatically. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Methamphetamine abuse and impairment of social functioning: A review of the underlying neurophysiological causes and behavioral implications.

The highly addictive drug methamphetamine has been associated with impairments in social cognitions as evidenced by changes in users' behaviors. Physiological changes in brain structure and functioning, particularly in the frontal lobe, have also been identified. The authors propose a biopsychosocial approach to understanding the effects of methamphetamine addiction by relating the physiological effects of the drug to the behaviors and social cognitions of its users, through the application of the theory of mind paradigm. Although onset of methamphetamine use has been linked to the desire for socialization, chronic use has been associated with an increase in depression, aggressiveness, and social isolation, behaviors that also implicate involvement of the frontal lobe. The reviewed literature provides strong circumstantial evidence that social-cognitive functioning is significantly impacted by methamphetamine use and that the social isolation, depression, and aggressiveness associated with chronic use is due to more than just the social withdrawal associated with addiction. Treatment considerations for methamphetamine must therefore consider the role of social cognition, and pharmacological responses must address the documented impact of the drug on frontal lobe functioning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Abnormal Activation of Temporoparietal Language Areas During Phonetic Analysis in Children With Dyslexia.

Event-related magnetic fields were recorded using magnetoencephalography in children with (n=12) and without (n=11) dyslexia while they discriminated between pairs of syllables from a voice onset time series (/ga/-/ka/). Nonimpaired readers exhibited left-hemisphere predominance of activity after the resolution of the N1m, whereas children with dyslexia experienced a sharp peak of relative activation in right temporoparietal areas between 300 and 700 ms post-stimulus onset. Increased relative activation in right temporoparietal areas was correlated with reduced performance on phonological processing measures. Results are consistent with the notion that deficits in appreciating the sound structure of both written and spoken language are associated with abnormal neurophysiological activity in temporoparietal language areas in children with dyslexia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Representations of odors in the rat orbitofrontal cortex change during and after learning.

Cells in the orbitofrontal cortex (OF) respond to odors and their associated rewards. To determine how these responses are acquired and maintained, the authors recorded single OF units in rats performing an odor discrimination task. Approximately 64% of all cells differentiated between rewarded and nonrewarded odors. These odor valence responses changed during learning in 26% of all cells, and these changes were positively correlated with improving performance, supporting the idea that the information provided by these cells is used in learning the task. However, changes in odor valence responses were also observed after learning, and included not only increases in odor discrimination, but also decreases or mixed increases and decreases. Thus, only some of the changes in firing reflected acquisition of the task. The results suggest that learning triggers a continuing reorganization of OF neural ensembles representing odors and their rewards. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Social relationships, social support, and patterns of cognitive aging in healthy, high-functioning older adults: MacArthur Studies of Successful Aging.

This study examines the relationship of social ties and support to patterns of cognitive aging in the MacArthur Studies of Successful Aging (see L. F. Berkman et al., 1993), a cohort study of 1,189 initially high-functioning older adults. Baseline and longitudinal data provide information on initial levels as well as changes in cognitive performance over a 7.5-year period. Linear regression analyses revealed that participants receiving more emotional support had better baseline performance, as did those who were unmarried and those reporting greater conflict with network members. Greater baseline emotional support was also a significant predictor of better cognitive function at the 7.5-year follow-up, controlling for baseline cognitive function and known sociodemographic, behavioral, psychological, and health status predictors of cognitive aging. The findings suggest the potential value of further research on the role of the social environment in protecting against cognitive declines at older ages. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Ultrasonic vocalizations as indices of affective states in rats.

Adult rats spontaneously vocalize in ultrasonic frequencies. Although these ultrasonic vocalizations (USVs) have been described as by-products of locomotor activity or social signals, accumulating evidence suggests that they may also index anticipatory affective states. Converging ethological, pharmacological, and brain stimulation research indicates that whereas long low-frequency (> 0.3-s, 22-kHz) USVs occur during anticipation of punishment or avoidance behavior, short, high-frequency (     

"Ten years of research on the false-consensus effect: An empirical and theoretical review": Correction to Marks and Miller.

Reports an error in "Ten years of research on the false-consensus effect: An empirical and theoretical review" by Gary Marks and Norman Miller (Psychological Bulletin, 1987[Jul], Vol 102[1], 72-90). The block quotation on page 73 should be attributed to Crocker (1981). The two sentences immediately preceding this quotation should read: "Friendship groups typically exhibit a high degree of internal similarity with respect to members' beliefs, attitudes, values, and interests. Crocker (1981) reported the following:". (The following abstract of the original article appeared in record 1987-31255-001.) Ten years of research on the false-consensus effect (Ross, Greene, & House, 1977) and related biases in social perception (e.g., assumed similarity and overestimation of consensus) are examined in the light of four general theoretical perspectives: (a) selective exposure and cognitive availability, (b) salience and focus of attention, (c) logical information processing, and (d) motivational processes. The findings indicate that these biases are influenced by a host of variables and that no single explanation can account for the range of data. Instead, each theoretical perspective appears to have its own domain of application, albeit with some degree of overlap into other domains. The data further suggest that two or more specific mechanisms may operate simultaneously or in concert to produce assumed similarity and false-consensus effects. Discussion focuses on identifying the process or sets of processes operating in specific situations. We identify several gaps in the knowledge of mediating relationships and suggest directions for future research. We also discuss issues related to definition and measurement. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

What neuroimaging and brain localization can do, cannot do and should not do for social psychology.

Interest in bridging social psychology and neuroscience has seen a significant upsurge. Much of this interest has centered on brain localization--the attempt to relate psychological events to locations of brain events. Although many articles have sought to localize brain activity that supports social behavior, scant attention has been paid to the specific methods to be used in integrating brain localization data into psychological theory. The authors describe 4 strategies psychologists can use to integrate brain localization data and psychological theory, and they consider whether social psychology presents special considerations in the use of these strategies. They conclude that brain localization offers a useful tool for some but not all problems in social psychology, and they discuss the types of problems for which it may and may not prove useful. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Examining the neural correlates of choice behavior in a gambling task using steady state topography.

The present study investigated the behavioral and neuropsychological characteristics of decision-making behavior during a gambling task as well as how these characteristics may relate to the Somatic Marker Hypothesis and the Frequency of Gain model. The applicability to intertemporal choice was also discussed. Patterns of card selection during a computerized interpretation of the Iowa Gambling Task were assessed for 10 men and 10 women. Steady State Topography was employed to assess cortical processing throughout this task. Results supported the hypothesis that patterns of card selection were in line with both theories. As hypothesized, these 2 patterns of card selection were also associated with distinct patterns of cortical activity, suggesting that intertemporal choice may involve the recruitment of right dorsolateral prefrontal cortex for somatic labeling, left fusiform gyrus for object representations, and the left dorsolateral prefrontal cortex for an analysis of the associated frequency of gain or loss. It is suggested that processes contributing to intertemporal choice may include inhibition of negatively valenced options, guiding decisions away from those options, as well as computations favoring frequently rewarded options. (PsycINFO Database Record (c) 2010 APA, all rights reserved)